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首页> 外文期刊>Journal of nanomaterials >Constitutive Rheological Modeling of Flow Serration Behaviour in Metallic Glasses Showing Nanocrystallization during Deformation
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Constitutive Rheological Modeling of Flow Serration Behaviour in Metallic Glasses Showing Nanocrystallization during Deformation

机译：金属玻璃流变行为的本构流变模型在变形过程中表现出纳米晶化

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摘要

A simple micromechanism-inspired rheological model is developed that incorporates the serrated flow nature of metallic glasses subjected to compressive deformation at room temperatures. The process of propagation and the arrest of shear bands were addressed in this model. Shear-induced nanocrystallisation was believed to be responsible for strain hardening of material within the shear bands. The model is based on the assumption that the behaviour can be decomposed into two resistances acting in parallel: one captures the initial stiffness and shear softening and the second gives the time-shear-temperature hardening of material.
机译：建立了一个简单的受微机械启发的流变模型，该模型结合了在室温下经受压缩变形的金属玻璃的锯齿状流动特性。该模型解决了传播过程和剪切带的滞留问题。剪切诱导的纳米结晶被认为是造成剪切带内材料应变硬化的原因。该模型基于以下假设：行为可以分解为两个并行作用的阻力：一个捕捉初始刚度和剪切软化，第二个捕捉材料的时剪切温度硬化。

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